# Math Is Fun Forum

Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫  π  -¹ ² ³ °

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## #26 2007-04-18 08:18:33

burningleo
Member
Registered: 2007-04-10
Posts: 24

### Re: Brilliant mathematical minds

I like number three on the  one posted by Justlookingforthemoment

What was, was and whats here is now

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## #27 2007-04-26 03:52:52

burningleo
Member
Registered: 2007-04-10
Posts: 24

### Re: Brilliant mathematical minds

why do teachers ask you questions tht can have many answers like the find x one tht was right in a sort of way but i bet a teacher would say it's wrong

What was, was and whats here is now

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## #28 2007-10-23 13:41:43

LuisRodg
Real Member
Registered: 2007-10-23
Posts: 322

### Re: Brilliant mathematical minds

I may be a douchebag to point this out but one of the pictures, the ones about the limit as x approaches 8 is wrong.

Here it is:

It says that limit of (1 / (x-8)) as x approaches 8 is infinity which is wrong because for a double-sided limit to exist then the limit from the left and the limit from the right has to be equal. If we take the limit of such function as x approaches from the left = -infinity but if we evaluate from the right then the limit is = infinity which means that the double sided limit does not exist.

But then again this is a joke...Heh

Last edited by LuisRodg (2007-10-23 13:42:17)

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## #29 2007-10-24 01:00:45

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

### Re: Brilliant mathematical minds

If it bothers you that much, you could always open it up in Paint and scrawl an abs and a big pair of brackets around the left side.

Why did the vector cross the road?
It wanted to be normal.

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## #30 2007-10-24 02:25:57

Dross
Member
Registered: 2006-08-24
Posts: 325

### Re: Brilliant mathematical minds

I had a friend who was asked to come up to the board and "remove x" from a pair of simultaneous equations... so he just walked up and rubbed them both out!